Delustering of artificial-silk fibers or rayon



Patented Mar. 19, 1929.

UNITED STATES PATENT OFFlCE.

OSCAR I. MULLER, OF MONTCLA IR, NEW

JERSEY, ASSIGNOR TO NYANZA COLOR &

CHEMICAL CO. INC, OF NEW YORK, N. Y., A. CORPORATION OF NEW YORK.

DELUSTERING OF ARTIFICIAL-SILK FIBERS OR RAYON.

No Drawing. Application filed July 14,

This invention relates to improvements in the treatment of textitlefibers and more particularly has for its object the delustering ofartificial silk fibers or rayon. It is well known that for many purposesthe higher luster of artificial silk or rayon is objectionable and itis, therefore, advisable to improve the appearance of the artificialsilk fibers by removing the excessive gloss or delustering same 1 as maybe desired. It is important that in such a treatment the strength of thefiber and. its adaptability for other uses be not lessened.

By the process hereinafter described I have been enabled to delusterartificial silk fibers to any desired extent without weakenin same.

y improved process is as follows: I treat artificial silk in skein formalthough piece goods and hosiery may be so treated in a bath of thefollowing composition:

10 parts by weight of commercial green olive oil soap, and 10 parts byWeight of medium White glue are dissolved in 100 parts of water.

This mixture is heated, 4 parts of paraifin are added, the glue and soapserving as the emulsifying agents for the emulsion of paraffin in water.

Of this parafiin emulsion 1 part is used to 40 parts of water and. therayon material is subjected to a bathof this material at a temperatureof 90 to 95 F. for a period of about ten minutes. The specific action ofthe paraffin emulsion on the rayon fibers is to coat the surface of therayon fiber with a thin layer of adhesive and render same moresusceptible to the subsequent treatment with an abrasive. Thepreliminary treatment of the rayon fiber with this paraffin emulsion isimportant as it tends to make the fiber much more receptive to the aftertreatment with an abrasive.

After this treatment the rayon is put into a hydro-extractor to get ridof the superfluous liquid and is washed with water.

Whilst still moist the fiber is then entered into a fresh water bathcontaining suspended therein infusorial earth or a similar mildabrasive. For this purpose 'I takev from 5 to 10 pounds of infusorialearth for every 100 parts of Water and the material is agitated hereinat a temperature of from 90 to 95 F. for about thirty minutes oraccording to the extent of the delustering desired. It should be under-I stood that instead of the paraffin emulsion above mentioned, otheremulsions may be 1928. Serial No. 292,917.

used, and instead of infusorial earth other abrasives such as chalk,kaolin, fullers earth, talc or zinc oxide may be substituted.

Instead of the paraffin emulsion above mention, I have also been enabledto give the fiber an effective preliminary treatment by the use ofsolutions which will cover the rayon fiber with a satisfactory surfacecoating so as to make the subsequent treatment with an abrasiveefiective. As an example of such a solution I will mention a solutionof'aluminum stearate in carbon tetrachloride.

Having fully described my invention, What I claim is 1. A process ofdelustering artificial silk fibers by treating same with an emulsion ofolive oil soap, removing the superfluous liquid and subjecting thematerial to a bath containing infusorial earth in suspension.

2. A process of delustering artificial silk fibers by treating same withan emulsion of olive oil soap, glue and paraffin, removing theemulsifying liquid and treating the material in a bath containinginfusorial earth in suspension.

3. A process of delustering artificial silk fibers by treating same withan emulsion of olive oil soap, glue and parafiin, removing theemulsifying liquid andtreating the material in a bath containing asilicious abrasive in suspension.

4. A process of delustering artificial silk fibers byltreating same withan emulsion of olive oil soap, glue and paraflin in water, rcmoving theexcessive liquid by hydro-extracting and then treating in a suspensionof a silicious abrasive inwater for a period of thirty minutes at atemperature of approximately 90 F.

5. A process of delustering artificial silk fibers by subjecting same tothe action of an emulsion of soap, glue and parafiin in water and thensubjecting same to the action of a mineral abrasive suspended in waterat approximately 90 F. l

6. A process of delustering artificial silk fibers by subjecting same tothe action of an emulsion of soap, glue and parafiin in Water and thensubjecting same to the action of a mineral abrasive'suspended in Waterat ap- 105 proximately 90 F. and for a period of thirty minutes.

7. A process of delustering artificial silk fibers by treating the samewith a parafiin emulsion and thensubjecting the fiber to a no I pension.a

water bath containing an abrasive in suss. A process bf delusteringartificial silk fibers by treating the same with a parafiin emulsion andthen subjecting the fiber to a "Water bath containing infusorial earthin suspension.

9. A process of delustering artificial silk fibers by subjecting thefibers to a preliminary coating of a water proofing material and thentreatingthefibers so coated to the action of 11-. A processofdelustering artificial silk fibers by subjecting said fibers to apreliminary coating of'an adhesive material and then v subjecting saidcoated fibers to the, action of water havingi infusorial earth insuspension .therein.

12. The process of delustering -artificial silk-fibers b coating thesurface of said fibers with an ad iesive material and then subjectingsaid fibers after coating,%t0-a Water bath having an abrasive insuspension therein.

In testimony whereofI afliz my signature oscAR FQMULL R

